Rotary motor.



No. 869,867. EATENTED OCT. 29. 1907. E. R. MILLS, C. A. CONN & H. VAN ORMER.

ROTARY MQTOR'.y APPLIOATESN FILED DEU.B.19064 3 SHEETS-SHEET 1.

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.ROTARY MOTOR. l APPLICATION FILED DEO. 8, 190B.

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No. 869,867. PATENTED OOT. 29, 1907. E. R. MILLS, C`. A. CONN & H. VAN ORMER. I

ROTARY MOTOR. APPLIOATIoN FILED nzo.s.1e,os.

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WITN ESSES UNITED STATES 'TQENT OFFTOE. y

EDWARD R. MILLS AND CHARLES A. CONNQOF PITTSBURG, YPENNSYLVANIA, AND HERMAN VAN ORMER, OF HARTFORD, CONNECTICURAASSIGNORS TO LIBERTY MANUFACTURING- COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORATIONl OF PENNSYLVANIA.

ROTARY MOTOR.

Specification of LettersPatent.

Patented Oct. 29, I190'?.

Application filed December 8` 1906. Seria1N0.34=6.927.

useful Improvement in Rotary Motors, of which the following is a full, clearl` and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a longitudinal section of a motor embodying our invention; Fig. 2 is a transverse section of the same on the line II-II of Fig. 1; Fig. 3v is a detail view of the admission plate or disk; Fig. 4 is a similar view of the exhaust plate or disk; Fig. 5 is a longitudinal section of the cylinder with the other parts removed therefrom; Fig. 6 is an end view of the same; Fig. 7 is a detail sectional view of the admission h ead; Fig. 8 is an end view of the same; Fig. 9 is a detail sectional view of the exhaust head; Fig. 10 is an end view of the same g and'Fig. 11 is a view similar to Fig. l but showing a modication.

Our invention has relation to motors, and more particularly to motors for operating small tools such as boileritube cleaning tools, in which the motor is carried through the tube to be cleaned with the tool, although it may be used for-various other purposes.

' The invention is particularly designed to provide a motor which shall be capable of operation by compressed air; which shall be capable ofa high speed of operation; which shall be of compact construction; and

of high general eiciency.

. With these objects in view, the invention consists in the novel construction, arrangement and combination of parts all substantially as hereinafter described and pointed out in the appended claims.

In the`drawing, the numeral 2 designates the cylinder of the motor, which is made of considerable length, and in which is an eccentrically located cylindrical piston chamber 3. i

4 is an admission head threaded or otherwise secured in one end portion of the cylinder, and which is shown as having an inlet port 5 adapted to be connected with a suitable source of power. The port 5 is formed within the head'4 with two or more branches 6 which communicate at their inner ends with an annular port or chamber 7, whose inner wall is formed by an admission plate or disk 8 having therein an admission port or op'ening 9. 10 is an exhaust head which is screwed or otherwise secured in the opposite end pprtion of lthe cylinder 2, and which is formed at its iner end with an-annular chamber 11 from which lead outwardly to the outer end ofthe head, two or more exhaust ports or passages 12. The inner wall of the annular chamber v11 is formed by an exhaust plate or disk 13 having therein an exhaust port or opening 14. The two 4plates or disks 8 and 13 are .secured against rotation by any suitable means, such as a pin inserted through a hole 8, or 13, in the disk, and into a corresponding hole 16, (Fig. 6), in the eccentric wall of the cylinder 2.

The admission port 9 of the plate or disk 8 communicates with a longitudinally extending port 17 in the wall of the cylinder 2, and the port 14 in the disk or pla/teil3 communicates with a port 18 which extends longitudinally of the cylinder at the opposite side ofv the cylinder from the port 17. These two ports are shown as extending the full length of the cylinder between the disks or plates 13, and each of them has a plurality of openings or passages 19 which extend thereeccentrically in the chamber 3. This piston is formed at one end` with a short shaft projection 21, which is journaled in a bearing provided thereforin the admission head 4, a thrust bearing or washer 22 being providedfor the end of the shaft. The other end of the piston has a shaft 23, which is journaledin the exhaust` head 10 through which it extends, its Outer projecting end being provided with means such as-the screwthreaded shank 24, for the. connection therewith ofa suitable tool.

25 designate lubricating grooves or passages, for the piston shaft bearings, saidpassages having feed openings 26 which extend outwardly through the admission and exhaust heads respectively and are normally closed by means Offsuitable check valves 27 held seated by springs 28. The admission and exhaust heads are also formed with the lubricating passages 29, by means of which a lubricant may be introduced into the'annular chambers 7 and 11. The passages 29 are normally closed by spring-seated check valves4 30 similar to the valves 27.

Seated in the rotary piston 20 arethe oppositely directed vanes or blades 31 and 32. These vanes or blades are arranged to move freely in the piston, a leaf spring 33 being seated between them for the purpose vof maintaining contact between their outer edges and the walls of thexpiston chamber 3. f The admission and exhaust heads may be firmly secured in the ends of the cylinder by any suitable means as by small screw-studs- 34.

The construction shown in Fig. 11 is similarto that portions 35 which vcarry the annularchambers 7 and 11, instead of being formed as an integral part of the admission and exhaust heads respectively, are formed in separate pieces which are seated between the said heads and the admission and exhaustplates, the purshown in the other figures, with the exception that the pose of this construction beingto provide for the ready uncovered thereby, at which timethe entering presv sure yis behind the opposite vane or blade. ln this manner, a constant high speed rotation is maintained.

lhe advantages of our 'invention consist in the arrangement oi" the piston cylinder and admission ports in the manner described, whereby a high speed ot rotation may be obtained, in the simple and compact construction and arrangements o the parts whereby a motor is provided which can be operated in a small space such as the interior oi a boiler tube; and in the construction described, in which the parts can be readily removed and in which all the parts are accessible for lrenewal or repairs.

Various changes may be made in the details of construction and arrangement'by those skilled in the art, without departing from the spirit and scope oi our invention. i

What We claimisz-v chamber, admission and exhaust ports in the walls of the cylinder and communicating with the piston chamber at different points throughout its length, detachable ported admission and exhaust heads closing the ends of the cylinder, and 'a rotary' piston journaled in the admission and exhaust heads, substantially as described. y

2. In a motor, a cylinder havinga piston chamber therein eccentric to the longitudinal axis of the cylinder and also having longitudinally extending admission and exhaust ports in its wall which communicate with said chamber at a'plurality of different points, and detachable ported admission and exhaust heads closing the ends of the cylinder and having their ports communicating with the longitudinally extending admission and exhaust ports, said heads also carrying bearings for the rotary piston, substantially as described.

3 1n a motor, a cylinder having a piston chamber therein, a rotary piston, longitudinally extending admission and exhaust ports, each communicating with'the cylinder at a plurality of points throughout its length, and ported admission and exhaust heads closing the ends of the cylinder and removably secured thereto and carrying bearings for the rotary piston; substantially as described.

4. In a motor, a cylinder having aneccentric piston chamber therein and longitudinally extendingadmission and exhaust ports communicating with said chamber at different pointsalong its length, a removable ported admission head closing one end of the cylinder, a removable ported exhaustl head closing the opposite end of the cylinder, said heads having bearings' for the piston, and ported admission and exhaust plates or disks intermediate the respective heads in the ends of the piston; substantially as described. Y

In a motor, a cylinder having a longitudinally extending piston chamber, admission and exhaust ports extending parallel with said chamber and communicating therewith at a plurality of points, ported admission and exhaust heads closing the ends of said cylinder and having their ports arranged to communicate respectively with the admission and exhaust ports of the cylinder, and a rotary pistoin'having journal portions provided with bearings in the said heads, and means for lubricating said bearings; substantially as described.

(i. In a motor, a cylinder having a longitudinallyA extending piston chamber therein, admission and exhaust with the chamber and communicating therewith at diffcrent points throughout its length, a rotary piston in said ichamber,v means for admitting pressure to the admission which connects the same with the exhaust port of the 4 cylinder; substantially as described.

S. In a motor, a cylin'der having a longitudinal piston chamber, admission and exhaust ports in the walls of the cylinder and communicating with the piston chamber at dillerent points throughout its length, ported admission and exhaust heads closing the ends of the cylinder, a rotary piston journaled in the admission and exhaust heads,

j and means for lubricating the piston journals; substantially as described. 1

0. In a motor, a cylinder having a piston chamber eccenytric to the longitudinal axis of the cylinder and also having longitudinally extending admission and exhaust ports in .its wall which communicate with said chamber at a plurality of ditterent points, detachable heads closing the ends ofsaid cylinder and having ports which communicate respectively'with the longitudinally extending admission and exhaust ports, the rear head having means for the attachment thereto of a iiuid supply pipe, and a rotary piston journaled insaid heads, said piston having one of its journals extended through the front head and provided with means for attaching a tool thereto, substantially as described.

10. In a motor, a cylinder having a piston chamber eccentric to the longitudinal axis ofthe cylinder and also having longitudinally` extending admission and exhaust ports in its wall which communicate with said chamber at a plurality of different points, heads detachably secured to saidcylinder and closing its end portions, said heads havingrespectively admission and exhaust ports therein in `communication with the longitudinal ports in the cylinder wall, a rotary piston journaled in said heads, and means in the rear head for taking the end thrust of the piston, substantially as described.

11. In a motor of the character described, a cylinder having a piston chamber therein and also having longitudinally extending admission and exhaust ports at its wall which communicate with said chamber at a plurality of dllerent points, and heads closing the ends of said cylinder'and detachably secured thereto, said heads having ports which communicate with the respective ports in the cylinder and being of an exterior diameter dilerent from that of the cylinder, substantially as described.

12; In a motor ot the character described, a cylinder having a piston chamber therein and also having longiwall which communicate with said chamber at a plurality of dderent points, and heads closing the ends ot said cylinder anddetachahly secured thereto, said heads having ports which' communicate witl the respective ports in the cylinder and having a cylindrical cross section at all points, substantially as described.

13. In a motor, a cylinder having a piston chamber therein and also having longitudinally extending admission and exhaust ports in its wall which communicate with said chamber at a plurality of dilerent points throughout its length, ported heads secured to and closing the ends of the ,cylinder, a rotary piston journaled within the said heads, and means for lubricating the piston journals and also the cylinder, substantially as described.

.14. In a motor, a lcylinder having a piston chamber therein and also having longitudinally extending admission and exhaust ports in its wall which communicate the ends of the cylinder. and a rotary piston journaled within the said heads. tllefbearings for the-pistou having openings communicating therewith and leading outwardly through the heads. substantially as described.

15. In a motor, a cylinder having a piston chamber therein and also having longitudinally extending admis sion and exhaust ports in its walls which communicate with said chamber at a plurality of diterent points. the centers 0f said ports being less than 180s from each other.

the cylinder, and a rotary piston journaled in said heads and having a single slot extending dametrically therethrough to seat a piston blade. substantially as described.'

16. In a motor, a cylinder' having a piston chamber connecting a supply pipe to one of said heads. substantially aus described.

1T. In a motor. a cylinder' having a longitudinal piston chamber. admission and exhaust ports inthe walls of th.l cylinder communicating with the piston chamber at litter ent points throughout its length. ported admis-sion and exf journal. substantially as described. ported heads detachably secured to and closing the ends of thereinvand also having longitudinally.extending admission and exhaust ports in its wall which communicate with s-iid cylinder at a plurality of diterent points. ported admission and exhaust heads closing the ends of the cylinder and detachably secured thereto. a rotary piston journaled in the admission and exhaust ports. and means for In testimony whereof. we have hereunto set our hands.

E. R. MILLS. CHARLES A. CONN. HERMAN VAX (,)RHICIL witnesses as to E. R. Mills mili c.' A. Coun:

H, M. Conwix, M. V. Klum..

. Witnesses as to H. Van Ormer:

W. J. WELCH. )IAR'rlx V. Sill'ru. 

